#!/usr/bin/python
# Filename: cat.py

import sys

def readfile(filename):
	'''Print a file to the standard output.'''
	if '-' == filename:
		f = sys.stdin
	else:
		f = file(filename)

	while True:
		line = f.readline()
		if len(line) == 0:
			break
		print line, # notice comma
	f.close()

# Script starts from here
if len(sys.argv) < 2:
	readfile( '-' )
	sys.exit()

if sys.argv[1].startswith('--'):
	option = sys.argv[1][2:]
	# fetch sys.argv[1] but without the first two characters
	if option == 'version':
		print 'Version 1.2'
	elif option == 'help':
		print '''\
This program prints files to the standard output.
Any number of files can be specified.
Options include:
--version : Prints the version number
--help : Display this help'''
	else:
		print 'Unknown option.'
		sys.exit()
else:
	for filename in sys.argv[1:]:
		readfile(filename)

